Synthesis of Tetrahydrobenzo[B]Pyran Derivatives Using Thiamine Hydrochloride (VB1) : A Green Catalyst

Devidas S. Bhagat; Jagadish L. Wawre; Ashok R. Yadav; Pintu G. Pathare; Laszlo Kotai; Rajendra P. Pawar

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Synthesis of Tetrahydrobenzo[B]Pyran Derivatives Using Thiamine Hydrochloride (VB1) : A Green Catalyst

机译：盐酸硫胺素（VB1）合成四氢苯并[B]吡喃衍生物：一种绿色催化剂

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An environmentally safer synthesis of 2-amino-tetrahydro-4H-chromenes derivatives using vitamin B 1 was achieved by one pot synthesis. In this reaction condensation of various aromatic aldehydes, malononitrile and dimedone at room temperature without addition of any other catalyst has been done. The desired products can be separated directly from the reaction mixture with high purity. This synthetic method is inexpensive, efficient, as well as eco-friendly.

机译：通过一锅法合成，可以实现使用维生素B 1的环境更安全的2-氨基-四氢-4H-色烯衍生物的合成。在该反应中，在不添加任何其他催化剂的情况下，在室温下缩合了各种芳族醛，丙二腈和二甲酮。所需产物可以直接从反应混合物中以高纯度分离。这种合成方法便宜，有效且环保。

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《European Chemical Bulletin》 |2017年第5期|共4页
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Devidas S. Bhagat; Jagadish L. Wawre; Ashok R. Yadav; Pintu G. Pathare; Laszlo Kotai; Rajendra P. Pawar;
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机译：一种高效，绿色的盐酸硫胺素（VB1）催化合成[1,3]恶嗪衍生物的方法
2. Silica-coated magnetic NiFe2O4 nanoparticles-supported H3PW12O40; synthesis, preparation, and application as an efficient, magnetic, green catalyst for one-pot synthesis of tetrahydrobenzo[b]pyran and pyrano[2,3-c]pyrazole derivatives [J] . Maleki Behrooz, Eshghi Hossein, Barghamadi Mohammad, Research on Chemical Intermediates . 2016,第4期

机译：二氧化硅包覆的磁性NiFe2O4纳米颗粒负载的H3PW12O40;一锅合成四氢苯并[b]吡喃和吡喃并[2,3-c]吡唑衍生物的合成，制备及应用为高效磁性绿色催化剂
3. Thiamine hydrochloride (VB1)-catalyzed one-pot synthesis of (E)-N-benzylidene-2-phenyl-1H-benzo[d]imidazo[1,2-a]imidazol-3-amine derivatives [J] . Chen F., Lei M., Hu L. Tetrahedron . 2013,第14期

机译：盐酸硫胺素（VB1）催化一锅合成（E）-N-亚苄基-2-苯基-1H-苯并[d]咪唑并[1,2-a]咪唑-3-胺衍生物
4. Synthesis of 5-benzylidene-hydantoin and 5-benzylidene-creatinine derivatives under mixed catalyst systems of urea-p-toluenesulfonic acid (Urea-PTSA) and guanidine hydrochloride-triethylamine (GnHCl-TEA) [C] . Kautsar Ul Haq, Septi Rosiana Dewi, Sherly Dwi Cicilianingrum, Joint Conference on Chemistry . 2020

机译：尿素 - 对甲苯磺酸（尿素-PTSA）混合催化剂体系中的5-苄基 - 乙内酰胺和5-苄基 - 肌酐衍生物的合成，盐酸盐 - 三乙胺（GNHCL-TEA）
5. New developments toward the synthesis of heterocycles and applications in green chemistry. I. A simple and essentially one-pot synthesis of N-aminated heterocycles using phase transfer catalyst (Aliquat-336). II. Synthesis of pharmaceutically important pyrrole derivatives. III. Applications in green chemistry: Surfactant-mediated environmentally friendly cleavage of aromatic esters and trans-esterification under solvent-free neutral conditions . [D] . Patel, Nitinchandra. 2005

机译：杂环合成的新进展及其在绿色化学中的应用。 I.使用相转移催化剂（Aliquat-336）简单且基本上一锅合成N-胺化的杂环。二。药学上重要的吡咯衍生物的合成。三，在绿色化学中的应用：在无溶剂的中性条件下，表面活性剂介导的环境友好的芳族酯裂解和酯交换反应。
6. Green and efficient three-component synthesis of 4H-pyran catalysed by CuFe2O4@starch as a magnetically recyclable bionanocatalyst [O] . Maryam Kamalzare, Mohammad Bayat, Ali Maleki 2020

机译：用Cufe2O4 @淀粉作为磁性可回收的毕马丹催化剂的4H-吡喃的绿色和高效三组分合成
7. A GREEN APPROACH FOR THE SYNTHESIS OF 2-AMINO-4H-BENZO B PYRAN DERIVATIVES USING DBU AS AN EFFICIENT CATALYST [O] . Vijay N Bhosale, Ashok R Karad, Navanand B Wadwale, 2018

机译：使用DBU合成2-氨基-4H-苯并B吡喃衍生物作为高效催化剂的绿色方法

Synthesis of Tetrahydrobenzo[B]Pyran Derivatives Using Thiamine Hydrochloride (VB1) : A Green Catalyst

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